Statistical Process Control (SPC)

Statistical Process Control (SPC) uses statistical techniques and methods to monitor, analyze, and control the variation in the process. SPC is used to help us identify and improve out of control processes as well as track the process performances.

The main tools for statistical process control are quality control charts where process performances are measured and compared to statistical control limits. Other SPC tools and methods are process capability, Cp, Cpk, Pp, and Ppk, pareto analysis, flow diagrams, cause and effect (fishbone) diagram, histogram, SPC identifies special causes of variation and SPC methods are used within a quality management system through team and individual activities within organizations.
Quality practitioners should be able to identify the need and select the appropriate SPC tool, apply it, interpret the results, and make appropriate decisions.